Seahorse: But that’s just it: the fact that your conscience is telling you that there’s something wrong here is all the proof that you need. There’s no need to try to rationalize around your conscience.
I don’t really know enough about facebook to say that it’s an aveira to use. I think it’s probably neutral by itself, just that it makes it easier to do the wrong things with it. And since it’s not an essential part of life, it is better to make a fence.
Let’s say you want to put up some pictures of yourself. Then along comes your opposite and bumps into your facebook page and looks at your pictures.
Or let’s say you’re friend slipped on some loshon hora. BOOM! Now every one of you’re friend’s friends have seen it as opposed to just a small slip to one or two people.
And as I was trying to say earlier. What kind of middos does it train a person to have, when they are constantly alerting everyone to what’s going in their own lives and nosing around in every detail of their friends’ lives.
I say follow your conscience.